Abstract
A 0, 08% maximum legal blood alcohol level (BAL) for drivers in Queensland was replaced by a 0.05% BAL. As alcohol is especially likely to be a factor in night- time accidents, the evaluation focused on the extent to which night- time accidents decreased in comparison to daytime accidents. The evaluation showed that the 0, 05% BAL had an accident- reducing effectiveness beyond its first year of operation, although some of the accident reductions in the second and third years may have been partly the result of increased enforcement.